GRAND RAPIDS, Mich. (WOOD) — Two nurses were attacked outside Mary Free Bed early Tuesday morning, police say.

It happened around 4:30 a.m., according to the Grand Rapids Police Department.

Police say the two women were standing outside the hospital when they were attacked unprovoked by a man. They say the man swung wooden sticks at the women, one of whom was hit in the face. The other was hit in the hand as she tried to block her face.

The nurses’ injuries were not considered life-threatening, police say. One sought treatment.

“Unfortunately, while two staff members were on break outside of the hospital overnight, they were approached and assaulted by an unknown person,” Mary Free Bed Rehabilitation said in a statement. “Both of our team members are safe and doing OK. Our security department is collaborating with the Grand Rapids Police Department as they identify and charge the suspect.”

The hospital said the safety of its staff was “of the utmost importance.”

“We are using this unfortunate incident to remind our teams about safety precautions we can all take when we are off campus,” Mary Free Bed said.

The man is in custody and faces a charge of felonious assault, according to GRPD. Police say he has been aggressive toward them in the past.